.site-nav a[aria-current="page"] {
  color: var(--color-text);
}

.cases-hero {
  position: relative;
  overflow: clip;
  padding-top: calc(var(--space-96) + 12px);
}

.cases-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(198, 49, 51, 0.08), transparent 34%),
    linear-gradient(180deg, rgba(247, 247, 247, 0.92), rgba(255, 255, 255, 0) 58%);
  pointer-events: none;
}

.cases-hero__grid,
.case-method-grid,
.case-grid,
.common-principles__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-24);
}

.cases-hero__grid {
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.82fr);
  align-items: center;
}

.cases-hero__copy,
.cases-hero__panel,
.case-method-card,
.case-cluster-chooser,
.case-filter-bar,
.case-card,
.featured-case__overview,
.featured-case__panel,
.common-principle-card,
.cases-final,
.case-empty {
  border: 1px solid rgba(68, 68, 68, 0.1);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-card);
}

.cases-hero__copy {
  padding: clamp(28px, 4vw, 40px);
}

.cases-hero__title {
  margin-top: var(--space-24);
  font-size: clamp(38px, 5vw, var(--text-hero));
  line-height: var(--line-tight);
  letter-spacing: -0.045em;
  max-width: 13ch;
}

.cases-hero__lead {
  max-width: 720px;
  margin-top: var(--space-24);
  font-size: var(--text-body-lg);
  line-height: 1.65;
  color: var(--color-text-soft);
}

.cases-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-top: var(--space-32);
}

.cases-hero__panel {
  display: grid;
  gap: var(--space-24);
  padding: 32px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 247, 247, 0.98));
}

.cases-hero__points {
  display: grid;
  gap: var(--space-12);
}

.cases-hero__points li {
  position: relative;
  padding: 16px 18px 16px 40px;
  border-radius: 16px;
  background: var(--color-bg-soft);
  color: var(--color-brand-ink);
}

.cases-hero__points li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 21px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-brand-primary);
  box-shadow: 0 0 0 6px rgba(198, 49, 51, 0.12);
}

.case-method-grid,
.common-principles__grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-method-card,
.common-principle-card {
  display: grid;
  gap: var(--space-16);
  padding: 28px;
}

.case-method-card img {
  width: 46px;
  height: 46px;
}

.case-method-card__step {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
}

.case-method-card h3,
.common-principle-card h3,
.case-card__identity h3 {
  font-size: var(--text-h3);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.case-method-card p,
.common-principle-card p,
.case-filter-bar__copy p,
.case-card__identity p,
.case-card__block p,
.case-empty p,
.featured-case__overview p,
.featured-case__panel p,
.cases-final__copy p {
  color: var(--color-text-soft);
}

.case-catalog {
  display: grid;
  gap: var(--space-24);
}

.case-cluster-chooser {
  display: grid;
  gap: var(--space-24);
  padding: clamp(24px, 4vw, 32px);
  background:
    radial-gradient(circle at top left, rgba(198, 49, 51, 0.06), rgba(198, 49, 51, 0) 32%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 247, 247, 0.96));
}

.case-cluster-chooser__copy {
  display: grid;
  gap: var(--space-8);
  max-width: 720px;
}

.case-cluster-chooser__copy strong {
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.case-cluster-chooser__copy p {
  color: var(--color-text-soft);
}

.case-cluster-chooser__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.case-cluster-option {
  display: grid;
  gap: 10px;
  min-height: 148px;
  padding: 20px;
  border: 1px solid rgba(68, 68, 68, 0.1);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  text-align: left;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

.case-cluster-option:hover,
.case-cluster-option:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(198, 49, 51, 0.24);
  box-shadow: 0 16px 30px rgba(31, 31, 31, 0.06);
}

.case-cluster-option.is-active {
  border-color: rgba(198, 49, 51, 0.22);
  background: rgba(198, 49, 51, 0.08);
  box-shadow: 0 14px 28px rgba(198, 49, 51, 0.08);
}

.case-cluster-option__label {
  font-size: 20px;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.case-cluster-option__meta {
  font-size: var(--text-small);
  line-height: 1.6;
  color: var(--color-text-soft);
}

.case-filter-bar {
  display: grid;
  grid-template-columns: minmax(0, 0.6fr) minmax(0, 1fr);
  gap: var(--space-24);
  align-items: center;
  padding: clamp(24px, 4vw, 32px);
}

.case-filter-bar__copy {
  display: grid;
  gap: var(--space-8);
}

.case-filter-bar__copy strong {
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.case-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

.case-filter {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(68, 68, 68, 0.12);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-text-soft);
  font-size: var(--text-small);
  font-weight: 600;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.case-filter:hover,
.case-filter:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(198, 49, 51, 0.28);
  color: var(--color-text);
}

.case-filter.is-active {
  border-color: rgba(198, 49, 51, 0.22);
  background: rgba(198, 49, 51, 0.08);
  color: var(--color-brand-primary);
  box-shadow: 0 10px 24px rgba(198, 49, 51, 0.08);
}

.case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.case-card {
  position: relative;
  display: grid;
  gap: var(--space-24);
  padding: 28px;
  min-height: 100%;
  overflow: hidden;
  transition:
    transform 0.24s ease,
    border-color 0.24s ease,
    box-shadow 0.24s ease,
    background-color 0.24s ease;
}

.case-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(198, 49, 51, 0.9), rgba(198, 49, 51, 0.15));
  opacity: 0;
  transform: scaleX(0.35);
  transform-origin: left;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.case-card:hover,
.case-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(198, 49, 51, 0.16);
  box-shadow: 0 18px 36px rgba(31, 31, 31, 0.08);
}

.case-card:hover::before,
.case-card:focus-within::before {
  opacity: 1;
  transform: scaleX(1);
}

.case-card__header,
.case-card__identity,
.case-card__footer,
.featured-case__client,
.cases-final__actions {
  display: flex;
  gap: var(--space-16);
}

.case-card__header {
  align-items: flex-start;
  justify-content: space-between;
}

.case-card__identity {
  align-items: flex-start;
}

.case-card__footer {
  align-items: flex-end;
  justify-content: space-between;
}

.case-card__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(198, 49, 51, 0.1), rgba(198, 49, 51, 0.04)),
    rgba(247, 247, 247, 0.8);
  color: var(--color-brand-primary);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  flex: 0 0 auto;
}

.case-card__actions {
  display: flex;
  flex-shrink: 0;
}

.case-card__mark--large {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  font-size: 20px;
}

.case-card__identity p {
  margin-top: var(--space-8);
  font-size: var(--text-small);
}

.case-card__stack {
  display: grid;
  gap: var(--space-16);
}

.case-card__block {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid rgba(68, 68, 68, 0.08);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(251, 251, 250, 0.96), rgba(247, 247, 247, 0.92));
}

.case-card__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
}

.case-card__list,
.featured-case__list {
  display: grid;
  gap: 10px;
}

.case-card__list li,
.featured-case__list li {
  position: relative;
  padding-left: 18px;
  color: var(--color-text-soft);
}

.case-card__list li::before,
.featured-case__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-brand-primary);
}

.case-card__footer {
  align-items: flex-start;
  justify-content: flex-start;
  margin-top: auto;
  flex-wrap: wrap;
}

.case-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.case-tag-list li {
  padding: 8px 12px;
  border: 1px solid rgba(68, 68, 68, 0.08);
  border-radius: var(--radius-pill);
  background: var(--color-bg-soft);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-brand-ink);
}

.case-empty {
  padding: 22px 24px;
}

.featured-case-section {
  position: relative;
  overflow: clip;
}

.featured-case-section::before {
  content: "";
  position: absolute;
  inset: auto auto -18% -12%;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 49, 51, 0.12), rgba(198, 49, 51, 0) 72%);
  pointer-events: none;
}

.featured-case {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: var(--space-24);
  align-items: start;
}

.featured-case__overview,
.featured-case__panel,
.cases-final {
  padding: clamp(26px, 4vw, 40px);
}

.featured-case__overview {
  display: grid;
  gap: var(--space-24);
  background:
    radial-gradient(circle at top left, rgba(198, 49, 51, 0.06), rgba(198, 49, 51, 0) 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 247, 247, 0.96));
}

.featured-case__client {
  align-items: center;
}

.featured-case__client strong {
  display: block;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.featured-case__client p {
  margin-top: var(--space-8);
}

.featured-case__summary {
  padding: 18px;
  border-radius: 18px;
  background: rgba(247, 247, 247, 0.94);
}

.featured-case__detail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.featured-case__panel {
  display: grid;
  gap: var(--space-16);
}

.featured-case__steps {
  display: grid;
  gap: var(--space-16);
  counter-reset: featured-step;
}

.featured-case__steps li {
  position: relative;
  padding-left: 46px;
  color: var(--color-text-soft);
}

.featured-case__steps li::before {
  counter-increment: featured-step;
  content: counter(featured-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -1px;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-brand-primary);
}

.featured-case__steps strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text);
}

.common-principle-card {
  min-height: 100%;
}

.cases-final-section {
  position: relative;
  overflow: clip;
}

.cases-final-section::before {
  content: "";
  position: absolute;
  inset: auto -12% -24% auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 49, 51, 0.16), rgba(198, 49, 51, 0) 72%);
  pointer-events: none;
}

.cases-final {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-32);
  align-items: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 247, 247, 0.94));
}

.cases-final__copy {
  display: grid;
  gap: var(--space-16);
}

.cases-final__copy h2 {
  font-size: var(--text-h2);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

@media (min-width: 981px) and (max-width: 1440px) and (max-height: 900px),
  (min-width: 981px) and (max-width: 1280px) {
  .cases-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.76fr);
    gap: 20px;
  }

  .cases-hero__lead {
    font-size: 17px;
  }

  .cases-hero__copy,
  .cases-hero__panel,
  .case-method-card,
  .case-cluster-chooser,
  .case-filter-bar,
  .case-card,
  .featured-case__overview,
  .featured-case__panel,
  .common-principle-card,
  .cases-final,
  .case-empty {
    padding: 24px;
  }

  .case-filter-bar,
  .featured-case,
  .cases-final {
    grid-template-columns: 1fr;
  }

  .case-cluster-chooser__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-filter-list,
  .cases-final__actions {
    justify-content: flex-start;
  }
}

@media (max-width: 1080px) {
  .case-method-grid,
  .common-principles__grid,
  .case-grid,
  .featured-case__detail {
    grid-template-columns: 1fr 1fr;
  }

  .featured-case,
  .cases-final {
    grid-template-columns: 1fr;
  }

  .case-cluster-chooser__grid,
  .case-filter-bar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 920px) {
  .cases-hero__grid,
  .case-method-grid,
  .common-principles__grid,
  .case-grid,
  .featured-case__detail {
    grid-template-columns: 1fr;
  }

  .case-cluster-chooser__grid {
    grid-template-columns: 1fr;
  }

  .case-card__footer,
  .cases-final__actions {
    align-items: stretch;
  }

  .case-card__footer {
    flex-direction: column;
    justify-content: flex-start;
  }

  .cases-final__actions .button {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .cases-hero__lead {
    font-size: 17px;
  }

  .cases-hero__actions .button,
  .featured-case__actions .button {
    width: 100%;
  }

  .case-filter-list {
    justify-content: flex-start;
  }

  .case-cluster-option {
    min-height: auto;
  }

  .case-filter {
    width: 100%;
    justify-content: center;
  }

  .case-card,
  .featured-case__overview,
  .featured-case__panel,
  .case-method-card,
  .common-principle-card,
  .case-cluster-chooser,
  .case-filter-bar,
  .cases-final,
  .case-empty {
    border-radius: 20px;
  }
}